Data storage is the recording (storing) of information (data) in a storage medium. Different types of data storage play different roles in a computing environment. In addition to forms of hard data storage, there are now new services for remote data storage, such as cloud computing, that can bypass the need for physical storage of data.
Encryption at rest is a kind of data encryption that protects data which is stored on physical or virtual disks. This form of encryption is used to secure inactive data stored digitally, ensuring it is protected from unauthorized access.
In the context of information technology, security comprises cybersecurity and physical security -- both are used by enterprises to protect against unauthorized access to data centers and other computerized systems. Information security, which is designed to maintain the confidentiality, integrity and availability of data, is a subset of cybersecurity.
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